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A Method for Detecting the Optimum Day for Mating during 4-day Estrous Cycle in the Rat; Measuring the Value of Electrical Impedance of Vagina
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1987
Year
FertilityFitnessReproductive HealthGynecologyMenstrual CycleReproductive BiologyReproduction ResponseReproductive PhysiologyElectrical ImpedanceCyclic ChangesPublic Health4-Day Estrous CycleInfertilityOptimum DayEndocrinologyFertility TrackingPhysiologyMedicineReproductive Hormone
A method for detecting the optimum day for mating in the rat was investigated. Cyclic changes of electrical impedance of vagina (EIV) were studied in the rats. EIV indicated high value (over 3,000 omega) only at proestrus, and it was lower (under 3,000 omega) at other stage of estrous cycle. These results apparently indicate that measuring the EIV made to distinguish proestrus from other phases of estrous cycle. The female caged with male showed high copulation rate (88 approximately 96%) when her EIV had been over 3,000 omega.